To submit your questions or ideas, or to simply learn more about It Still Works, contact us. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. These include comparing the engine number and the crankshaft casting number, or counting bolts on the valve cover and looking for the engine displacement stamped on the cylinder head, etc.įord placed a tag under the coil-attaching bolt which contains all the necessary information to positively identify the engine, but it is easily lost or replaced with a fake tag. To positively identify a Ford engine, a combination of methods is required. The number is the year in that decade The remaining letters represent various factory modifications. Fiat throttle resetįor the engine number C4AE, Ford's system is decoded as follows: 'C' represents the decade manufactured, in this case, the s D for the s, E for the s, etc. The number will contain 4 letters and 1 number, for example: C4AE. On 6 cylinder engines, it will be below the exhaust manifold. On 8-cylinder engines, it is where the starter bolts onto the bell housing and the starter may have to be removed to locate it. Generally, on both 8 and 6-cylinder Ford engines, the engine number is towards the rear of the block on the passenger side. Although dates and location of manufacture are given, you must use other methods with it to positively identify the engine. Ford uses an engine number system which provides key manufacturing information but neglects to identify the engine size.

Ford engine block numbers decoder